EP 3050230 B1 20181003 - INDUSTRIAL PROCESS FIELD DEVICE WITH LOW POWER OPTICAL ISOLATOR
Title (en)
INDUSTRIAL PROCESS FIELD DEVICE WITH LOW POWER OPTICAL ISOLATOR
Title (de)
INDUSTRIEPROZESSFELDVORRICHTUNG MIT OPTISCHEM NIEDERLEISTUNGSISOLATOR
Title (fr)
DISPOSITIF DE TERRAIN DE PROCESSUS INDUSTRIEL AYANT UN ISOLATEUR OPTIQUE À FAIBLE PUISSANCE
Publication
Application
Priority
- US 201314038117 A 20130926
- US 2014050512 W 20140811
Abstract (en)
[origin: US2015082907A1] An industrial process control field device includes a process variable transducer configured to sense or control a process variable. Field device circuitry is configured to couple to the process variable transducer and communicate information related to the process variable to another location. The field device circuitry includes an optical isolator having transmit circuitry on a first side of a galvanic isolation configured to transmit an optical signal which is pulsed on and off across the isolation. Receive circuitry is located on a second side of galvanic isolation and configured to receive the optical signal with an optical sensor. The optical sensor enters an “on” state when it receives a pulse and is otherwise in an “off” state. The receive circuitry provides a secondary side output based upon the received optical signal. The receive circuitry enters in a low power state when the optical sensor is in the “off” state.
IPC 8 full level
H04B 10/80 (2013.01); G01F 1/58 (2006.01); G01F 1/60 (2006.01)
CPC (source: EP US)
G01F 1/60 (2013.01 - EP US); H04B 10/801 (2013.01 - US); H04B 10/802 (2013.01 - EP US); G01F 1/58 (2013.01 - EP US); G01F 1/588 (2013.01 - EP US); G05B 2219/15133 (2013.01 - EP US); G05B 2219/25458 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2015082907 A1 20150326; US 9175993 B2 20151103; CN 104515558 A 20150415; CN 104515558 B 20180911; CN 204064356 U 20141231; EP 3050230 A1 20160803; EP 3050230 B1 20181003; JP 2016533473 A 20161027; JP 6300904 B2 20180328; WO 2015047560 A1 20150402
DOCDB simple family (application)
US 201314038117 A 20130926; CN 201410313082 A 20140702; CN 201420364530 U 20140702; EP 14758206 A 20140811; JP 2016516970 A 20140811; US 2014050512 W 20140811